1911. Baldwin, Mark (Soil surveyor), Hole, Allen David, 1866-1940, Kelly, B. W. (Soil surveyor), and Roberts, W. A. (Soil surveyor). Detached from: Soil survey of Hancock, Shelby, and Johnson counties / Allen David Hole. In 36th Annual report of Department of Geology and Natural ... Indiana Department of Geology and Natural Resources and William B. Burford.
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1914. Barnes, Elmer (Soil surveyor), Hole, Allen David, 1866-1940, Mills, J. Blair (Soil surveyor), and Morris, Ralph C. Z. (Soil surveyor). Detached from: Soil survey of Jay County / Allen David Hole. In 39th Annual report of Department of Geology and Natural Resources, Indiana. Scale a... Indiana Department of Geology and Natural Resources and William B. Burford.
1911. Baldwin, Mark (Soil surveyor), Hole, Allen David, 1866-1940, Kelly, B. W. (Soil surveyor), and Roberts, W. A. (Soil surveyor). Detached from: Soil survey of Hancock, Shelby, and Johnson counties / Allen David Hole. In 36th Annual report of Department of Geology and Natural ... Indiana Department of Geology and Natural Resources and William B. Burford.